Fire-resisting shutter or curtain.



J. VOLP.

FIRE BESISTING SHUTTER OR CURTAIN.

APPLICATION FILED MAR. 26, 1909. I

\ Patehted Apr. 28, 1914.

UNITED STATES PATENT eerie- JOHN V'OIZP, OF GROVE CI TY, OHIO, ASSIGNOR "DO PI H E Klifl fl'itl'EAR MANUEAC'DURING COMPANY, OF COLUMBUS, OHIO, A *GOBFORATION OF WEST VIRGINIA.

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Specification of ietters Faten't. Patented All) 28,1914.

Application filedlarch26, 1909. 'Bcrial'flo. mien.

To all wko'mrit may concern:

Be it known that '1, JOHN 'VoLP, citizen of the United States, residing at Grove City, in=thecounty of Franklinand State of @hio,

have invented'acertain new and useful Improvement in Fire-Resisting Shutters or Curtains, of which the following is a specifi 'catiom,

' sections, one-of them 'being-shownasunfilled and the two others containing fillings dissimilarin-details- Fig. '2 is a view in elevation of end fractions of three slats or sections with end locks, the upper slat'having a wall broken out to show the construction of the end lock. Fig. 3 is a horizontal sectionithrough the end of a section or slat and end lock showing its;position in a guiding channel. {Fig/Lisa vertical section of one of the two constituent pieces ofthe slat body proper'or shell. Fig. 5 is a perspective view of a bent sheet metal brace for insertion in the interior of the slat. Fig. 6 is a similar view. of a cast metal slugfor the same purpose.

The slat body proper is in the form of a tube made up of two pieces of sheet metal of equal lengthand having a cross section:

like that shown in Fig. 4. In said view- 5 designates the side wall, 6 an edge wall bent from one edge of'the side wall to stand at right angles to the side wall and 7 a hook forming member bent from the outer'edge of the edge wall 6. 8 designates a hook forming member bent from the other edge of the side wall 5. The shape thus described can be conveniently'and expeditiously manufacturcd by passing the flat blankstrip through suitable die rollers- The hook forming edge or member S is formed on a larger arc than that'of the member so thatby in-' verting one strip with reference to another this lIIVGDlZlOIlflS to'provi'de. animp'rovedconstruction of flexible rolling portion 9 having .a perforation 9. head portion. 9 ismade large enough, when first mentioned strips;

I and placing them properl-y end-wise together the can be slid together and thereby be 100 ed fromlateral-separation and form a tube with a rectangular bore, as will be clearly understood "by an inspection of Fig. -'.1.

. v In the form of tubular construction.

shown, the vertical; sides present plane sur-f faces and'the hook members 7 and *8 are constructed to lie "within the planes ofthese surfaces.- In a curtain made up of this form-of slats, thereare 110' channels formed between the guiding grooveand the curtain through which the' flame can pass fromone side of the curtain to the-other.

9 designates the end lock. The primaryfunction of this look is to prevent the 'longitudinal movement-o'fltheslats on each other in the curtain, but in the present instance it is so constructed that, by its peculiar connectionwith "the constituent pieces or sides of the slat, it prevents those constituent pieces from Flongitudinal movement with refmemo to each other and therefore in conjunction with the interlocking hook-formin portions of-those sections binds the said si esor pieces together. The said end lock comprises ahead portion 9 and a flat shank The in place in a slat, to extend at its-end beyondthe 'hooks-of-the slats joined to it, and

the shank .9 is .made of a size to enter the hollow endof the slat and be secured there to by ressin the metal'of the sides 5 down into t e per oration 9, as clearly depicted in Fig.3.

'The hollow slats can be provided with a filling of any 'suitablecharacter. In the middle, slat Fig. -1-the filling consists-of two fiat strips of asbestos, one lyingnext to each of the inner sides of'the'slat and a single strip of corrugated asbestos lying between the p The middle strip of asbestos is of sufiicient; depth in its corrugations to hold the fiat strips against the inner sides of the strips. In the lowermost slat Fig. 1 the filling is'the same as that in the middle slat except that in the place of Y the single intermediate corrugated strip there are twocorrugated strips of smaller depth of corrugation separated by an intermediate flat strip. These fillings do not add greatly to the weight'of the curtain or shutter, -prevent rapid radiation of heat and somewhat brace the faces of the slat against collapsing when subjected to great heat.

- The walls of the slats can be thoroughly braced by providing at suitable intervals suitable devices for this purpose. In Figs.

1 and 5 the said bracing device consists of a piece of sheet metal bent to U-for'm'as seen at and made of dimensions to closely fit within the cavity of the slat. The bracing devices can be located at intervals and betweensections of the filling. In Fig. 6 the bracing device 10 somewhat resembles a curtains of this type.

chain link except that it is rectangular. In this form it can be of cast metal and numbers oiithem can be located in the same way as described with reference to the U-shaped sheet metal brace. In either case these braces prevent crushing or deforming the slat when rolled on each other or by other forces when the shutter or curtain is hangm .It will be understood, of course, that the shutter or curtain when made up can be hung upon a suitableroller as is the common practice with rolling or flexible shutters or The perforation of the shank of the endlock is not necessarily a through perforation."

What I claim isi 1. A slat for the construction of flexible shutters 'orcurtains comprising a tubular body portion having oppositely arranged hook members projecting from its edge -membe'rsat the adjacent ends fitted one Within the other. v

2. slat for. the construction of flexible shutters or curtains consisting of a pair of identically formed sheet metal strips, eachistrip comprising a side wall, an edge wall bent from one edge of the side wall, a hook forming member bent from the outer edge of said edge wall, and a hook formin member bent from the other edge of the si e wall 1n a direction opposite the first mentioned hook, said hook members and walls being so constructed that in reversing the strips the hook members at adjacent ends are adapted slidingly to fit one within the other with said side and edge walls forming a tubular body portion.

3. A slat for the construction of flexible shutters or curtains consisting of a pair of ldentically formed sheet metal strips, each strip comprising. a side wall, an edge wall bent from one ed e of the side wall, a hook formin member ent from the outer edge of sai edge wall and a hook forming member bent from the other edge of the side wall in a'direction opposite the first mentioned hook,'said hook members and walls being so constructed that in reversing the strips the hook members at adjacent ends are adapted slidingly to fit one within the other with said'side and ed e Walls forming a tubular body portion, said hook members lying within the vertical planes of the sides of the slat.

4. A slat for the construction of flexible shutters or curtains consisting of a pair of identically formed sheet metal strips each strip comprising a side wall 5, an edge wall 6 bent from one edge of the side wall at right angles to said side wall, a hook forming member .7 bent from the outer edge of said edge wall, and a-hook formin member 8 of greater are than the hook mem er 7. bent from. the other edge of the side wall in a \direction opposite that of hook 7. said hook members and walls being so constructed that in reversing the strips the hook members are adapted slidingly to fit one within the other with said walls forming a' tubular body portion, said hook members lyingwithin the vertical planes of the sides of the slat.

. JOHN VOLP. Witnessesi EDWARD H. MoCLoUD, ANNA TnREsA KING. 

